Join Date: Mar 2008
Location: Ontario, Califas
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Need help with carbs
On first test run after I completed installing evertyhing, I have bad sputter/popping when accelarating from 20-30mph. I am at half throttle then I step on it and get the sputtering/popping.
During this run, I forgot to hook up the crankase hose to the plenum/elbow and took off the rubber piece from the top of the airbox lid.
On my second run, I put the rubber piece back on and connected the crankase hose. It sputtered/popped right away. On my first run, I was able to reach a steady cruising speed and would only get the sputtering/popping after I stepped on the pedal.
Am I not getting enough air, vacum to the slides, or do I need bigger jets?
What I did;
I installed my ACracing dual exhaust and Velocity air filter.
I switched the bent connector between the air box and carb plenum/elbow to a straight connector I picked up at Pep Boys. No airbox mods.
My dynojet kit came with leftover jets from the dragonfire kit. Vendor at the sandsports who sold me the exhaust also has AC racing duals with 190 front and 195 rear jets. He is running the AFE intake, I just have the Velocity filter but I did change the elbow.
I have Dynojet 180 front and 185 rear. Clip is on second groove with two spacers on top. Slide springs and needles are same on both kits. Front and rear mixture screw is out two turns.
From factory, the fuel mixture screw was out 1 1/2 turns on the front and 1 turn out on the rear.
I can turn the
front mixture another 1/2 turn to match the rear by adding a complete turn to both carbs.
I already had an adjustable dynatek cdi from Hunterworks.
Thank you for your help, I am heading to Glamis on Thursday.
Last edited by red hippo; 10-19-2008 at 11:09 PM.